<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>第一个three.js文件_WebGL三维场景</title>
		<style>
			body {
				margin: 0;
				overflow: hidden;
				/* 隐藏body窗口区域滚动条 */
			}
		</style>
		<!--引入three.js三维引擎-->
		<script src="https://threejs.org/build/three.js"></script>
		<script src="./js/OrbitControls.js"></script>
	</head>
	<body>
		<script>
			/**
			 * 创建场景对象Scene
			 */
			var scene = new THREE.Scene();
			const axisHelper = new THREE.AxisHelper(100)
			scene.add(axisHelper)
			/**
			 * 创建网格模型
			 */
			// var geometry = new THREE.SphereGeometry(60, 40, 40); //创建一个球体几何对象
			var geometry = new THREE.BoxGeometry(100, 100, 100); //创建一个立方体几何对象Geometry
			var material = new THREE.MeshStandardMaterial({
				color: 0x0000ff,
				specular: 0x4488ee,
				shininess: 12
			}); //材质对象Material 
			var mesh = new THREE.Mesh(geometry, material); //网格模型对象Mesh
			scene.add(mesh); //网格模型添加到场景中// 渲染函数
				console.log(mesh)
			var geometry2 = new THREE.SphereGeometry(60, 40, 40);
			var material2 = new THREE.MeshLambertMaterial({
				color: 0xff00ff,
				opacity: 0.7,
				transparent: true,
				specular: 0x4488ee,
				shininess: 12
			});
			var mesh2 = new THREE.Mesh(geometry2, material2); //网格模型对象Mesh
			mesh2.translateY(120); //球体网格模型沿Y轴正方向平移120
			scene.add(mesh2);
			// 圆柱网格模型
			var geometry3 = new THREE.CylinderGeometry(50, 50, 100, 25);
			var material3 = new THREE.MeshLambertMaterial({
				color: 0xffff00,
				wireframe: true
			});
			var mesh3 = new THREE.Mesh(geometry3, material3); //网格模型对象Mesh
			mesh3.position.set(120, 0, 0); //设置mesh3模型对象的xyz坐标为120,0,0
			scene.add(mesh3);
			/**
			 * 光源设置
			 */
			//点光源
			var point = new THREE.PointLight(0xffffff);
			point.position.set(100, 200, 300); //点光源位置
			var point2 = new THREE.PointLight(0xffffff);
			point2.position.set(-100, -200, -300); //点光源位置
			scene.add(point); //点光源添加到场景中
			scene.add(point2); //点光源添加到场景中
			//环境光
			var ambient = new THREE.AmbientLight(0x444444);
			scene.add(ambient);
			// console.log(scene)
			// console.log(scene.children)
			/**
			 * 相机设置
			 */
			var width = window.innerWidth; //窗口宽度
			var height = window.innerHeight; //窗口高度
			var k = width / height; //窗口宽高比
			var s = 300; //三维场景显示范围控制系数，系数越大，显示的范围越大
			//创建相机对象
			var camera = new THREE.OrthographicCamera(-s * k, s * k, s, -s, 1, 1000);
			camera.position.set(200, 100, 200); //设置相机位置
			camera.lookAt(scene.position); //设置相机方向(指向的场景对象)
			/**
			 * 创建渲染器对象
			 */
			var renderer = new THREE.WebGLRenderer();
			let T0 = new Date(); //上次时间
			function render() {
				renderer.render(scene, camera); //执行渲染操作
			}
			var controls = new THREE.OrbitControls(camera, renderer.domElement); //创建控件对象
			controls.minZoom = 0.8
			controls.maxZoom = 1.2
			controls.addEventListener('change', render); //监听鼠标、键盘事件
			renderer.setSize(width, height); //设置渲染区域尺寸
			renderer.setClearColor(0xffffff, 1); //设置背景颜色
			document.body.appendChild(renderer.domElement); //body元素中插入canvas对象
			//执行渲染操作   指定场景、相机作为参数
			renderer.render(scene, camera);
			
			function animationRender(){
				requestAnimationFrame(animationRender)
				// mesh.rotateZ(0.01)
				renderer.render(scene, camera);
			}
			animationRender()
		</script>
	</body>
</html>
